package com.gege.web;

import com.gege.pojo.User;
import com.gege.service.UserService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * @author gege
 * @date 2021/9/23
 */
@WebServlet("/registerServlet")
public class RegisterServlet extends HttpServlet {
    private UserService service = new UserService();
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");

        //1. 获取用户名和密码数据
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        User user = new User();
        user.setUsername(username);
        user.setPassword(password);
        // 获取用户输入的验证码
        String checkCode = request.getParameter("checkCode");
        // 程序生成的验证码，从Session获取
        HttpSession session = request.getSession();
        String checkCodeGen = (String) session.getAttribute("checkCodeGen");
        // 比对
        if(!checkCodeGen.equalsIgnoreCase(checkCode)){
            request.setAttribute("register_msg","验证码错误");
            //请求转发
            request.getRequestDispatcher("/register.jsp").forward(request,response);
            //不允许注册
            return;
        }
        //2. 调用service 注册
        boolean flag = service.register(user);
        //3. 判断注册成功与否
        if(flag){
            ////注册功能，跳转登陆页面
            request.setAttribute("register_msg","注册成功,请登录");
            //请求转发
            request.getRequestDispatcher("/login.jsp").forward(request,response);
        }else{
            //注册失败，跳转到注册页面
            request.setAttribute("register_msg","用户名已存在");
            request.getRequestDispatcher("/register.jsp").forward(request,response);
        }
    }
        @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }
}
